package com.zzyl.nursing.service.impl;


import cn.hutool.core.util.ObjectUtil;
import cn.hutool.http.HttpUtil;
import cn.hutool.json.JSONObject;
import cn.hutool.json.JSONUtil;
import com.zzyl.common.exception.base.BaseException;
import com.zzyl.nursing.service.WechatService;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;

import java.util.HashMap;
import java.util.Map;

@Service
public class WechatServiceImpl implements WechatService {

    // 登录
    private static final String REQUEST_URL = "https://api.weixin.qq.com/sns/jscode2session?grant_type=authorization_code";

    // 获取token
    private static final String TOKEN_URL = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential";

    // 获取手机号
    private static final String PHONE_REQUEST_URL = "https://api.weixin.qq.com/wxa/business/getuserphonenumber?access_token=";

    @Value("${wechat.appId}")
    private String appId;

    @Value("${wechat.appSecret}")
    private String appSecret;


    /**
     * 获取openid
     *
     * @param code
     * @return
     */
    @Override
    public String getOpenid(String code) {
        //1.获取公共参数
        Map<String,Object> paramMap = new HashMap<>();
        paramMap.put("appid",appId);
        paramMap.put("secret",appSecret);
        paramMap.put("js_code", code);

        //2.发送请求
        String result = HttpUtil.get(REQUEST_URL, paramMap);

        //3.转换
        JSONObject jsonObject = JSONUtil.parseObj(result);

        //4.判断响应结果
        if (ObjectUtil.isNotEmpty(jsonObject.getInt("errcode"))) {
            throw  new BaseException(jsonObject.getStr("errmsg"));
        }

        return jsonObject.getStr("openid");
    }

    /**
     * 获取手机号
     *
     * @param detailCode
     * @return
     */
    @Override
    public String getPhone(String detailCode) {
        //1.获取token
        String token = getToken();

        //2.获取手机号
        Map<String,Object> paramMap = new HashMap<>();
        paramMap.put("code",detailCode);
        //发送请求
        String result = HttpUtil.post(PHONE_REQUEST_URL + token,JSONUtil.toJsonStr(paramMap));
        //反序列化
        JSONObject jsonObject = JSONUtil.parseObj(result);
        //判断响应结果
        if (jsonObject.getInt("errcode")!= 0){
            throw new BaseException(jsonObject.getStr("errmsg"));
        }

        return jsonObject.getJSONObject("phone_info").getStr("phoneNumber");
    }

    private String getToken() {
        Map<String,Object> paramMap = new HashMap<>();
        paramMap.put("appid",appId);
        paramMap.put("secret",appSecret);
        //发送请求
        String result = HttpUtil.get(TOKEN_URL, paramMap);
        //反序列化
        JSONObject jsonObject = JSONUtil.parseObj(result);
        //判断响应结果
        if (ObjectUtil.isNotEmpty(jsonObject.getInt("errcode"))){
            throw new BaseException(jsonObject.getStr("errmsg"));
        }
        return jsonObject.getStr("access_token");
    }
}
